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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  12-Apr-2012 by George Owsiacki (GO)

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NMI 103P6,5,11,12 Ag2
Name ALICE, ANNA MACK Mining Division Skeena
BCGS Map 103P053
Status Prospect NTS Map 103P11W, 103P12E
Latitude 055º 30' 09'' UTM 09 (NAD 83)
Longitude 129º 29' 54'' Northing 6150824
Easting 468522
Commodities Silver, Gold, Lead, Zinc, Copper Deposit Types I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt Intermontane Terrane Stikine, Bowser Lake
Capsule Geology

The Alice occurrence is located 1.75 kilometres north-northwest of Alice Arm. The area was explored extensively during the 1920s and 1930s for the northward extension of the Esperanza vein (103P 126).

The area is underlain by Middle to Upper Jurassic Hazelton Group sediments. The sediments dip moderately to steeply southwest and northeast as a result of being deformed into closely spaced northwest-trending folds.

The occurrence consists of a quartz-breccia vein, 0.05 to 1.8 metres wide, which strikes 140 degrees and dips 50 to 80 degrees southwest. The vein, traced for 213 metres along strike, follows a bedding plane shear in sediments. These sediments, consisting of thin bedded black argillite and argillaceous siltstone, strike north to northwest and dip west. Numerous lamprophyre and andesitic sills and northeast trending steeply dipping dikes cut the vein and sediments. The vein is thought to be the northward extension of the Esperanza vein (103P 126) about 1.2 kilometres to the southeast.

Mineralization consists of erratically distributed pyrite, galena, sphalerite, tetrahedrite, arsenopyrite, ruby silver (pyrargyrite) and argentite in quartz gangue. In the number 2 adit, 0.3 metre wide banded zones of near massive pyrite, galena, sphalerite and ruby silver are exposed in the margins of the vein. A composite sample of the vein taken along a strike length of 17 metres on the surface, assayed 1.37 grams per tonne gold, 771 grams per tonne silver, 0.5 per cent lead and trace zinc (Minister of Mines Annual Report 1934, page B14).

This vein is reported to extend northwest onto the Anna Mack claim, where a 0.15 metre wide sparsely mineralized quartz vein in argillite is exposed in a trench.

During 1934, the Alice adit was driven at 527 metres elevation to intersect the vein outcropping at about 20 metres higher elevation. The adit was driven in a winding direction for about 35 metres with the face heading 247 degrees which location should be about 15 metres to the projection of the vein at about this level. The Alice vein has been traced by opencuts and stripping between elevations 548 to 564 metres for a distance of about 213 metres, striking 320 degrees and dipping about 70 degrees southwest. Along this stretch the vein is 15 to 91 centimetres wide. It is reported that work on the crosscut adit to this vein ceased before the vein was intersected. By 1947, two adits crosscut to the vein and drift along it. In the upper adit, the vein zone is exposed for 20 metres and consists of several narrow stringers. The other adit, 9 metres lower, was extended southeasterly for a metre into massive intrusive rock, following a narrow zone with small lenses of mineralization. A 25 centimetre vein at the other end of this drift, 20 metres to the northwest, contains quartz and wallrock well mineralized with galena and sphalerite.

Bibliography
EMPR AR 1916-62,63; 1922-56; 1923-56; 1925-74; 1929-84; 1932-56; *1934-B14; 1935-B29; *1947-A94
EMPR BULL 63
EMPR FIELDWORK 1985, pp. 219-224; 1988, pp. 233-240; 1990, pp. 235-243; 2005, pp. 1-4
EMPR GEM *1969-64-67
EMPR MAP 8
EMPR OF 1986-2; 1994-14
EMR MP CORPFILE (Esperanza Mines Ltd.)
GSC MAP 307A; 315A; 1385A
GSC MEM 175, pp. 52,53
GSC SUM RPT *1928, pp. 37A,38A
GSC OF 864; 3272

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